FIELD: protection of pipes or pipe fittings against corrosion or incrustation, particularly oil-and-gas pipelines.
SUBSTANCE: method based on empirical combination of ultimate strength of pipeline wall material and geometrical pipeline and surface defect parameters involves measuring geometrical pipeline and surface defect parameters in local defect area; comparing current pipeline working pressure with collapsing pressure which is predetermined from a given mathematical relation; making decision on possibility of further pipeline operation, on working pressure reduction or on said pipeline section repairing on the base of above comparison. Mathematical relation includes strength and geometrical pipeline parameters and parameters of pipeline defect depending on defect type.
EFFECT: increased pipeline reliability.
2 dwg, 4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DETERMINING ALLOWABLE INTERNAL PRESSURE FOR MAIN PIPELINE LINEAR PART SECTION WITH STRESS-CORROSION CRACK | 2015 |
|
RU2603884C1 |
| METHOD FOR ESTIMATION OF DANGER OF PIPELINE DEFECTS | 1998 |
|
RU2172929C2 |
| METHOD TO EVALUATE OPERABILITY OF PROCESS EQUIPMENT OPERATED UNDER CONDITIONS CAUSING REDUCTION OF PLASTICITY AND CRACKING OF METAL IN STRUCTURAL ELEMENTS | 2014 |
|
RU2569964C1 |
| METHOD FOR REPAIRING METALLIC PIPELINES | 1999 |
|
RU2155905C2 |
| METHOD FOR IN-PIPE DIAGNOSTICS OF PIPELINE TECHNICAL STATE | 2018 |
|
RU2697008C1 |
| PIPE AND METHOD OF ITS REPAIRING | 2002 |
|
RU2293249C9 |
| METHOD OF ASSESSING WORKING CAPACITY OF STEEL OIL-AND-GAS PIPES IN TRANSIT PIPELINES | 2010 |
|
RU2442114C2 |
| METHOD OF PREVENTING PIPELINE WALLS AGAINST CRACKING | 2005 |
|
RU2295088C1 |
| METHOD FOR IDENTIFYING DEVELOPING DEFECTS OF MAIN PIPELINES | 2020 |
|
RU2753108C2 |
| METHOD OF ASSESSING RESISTANCE OF PIPELINE STEELS TO "GROOVE" CORROSION | 2019 |
|
RU2730102C1 |
